354221543115 has 96 divisors (see below), whose sum is σ = 687917767680. Its totient is φ = 167128012800.

The previous prime is 354221543113. The next prime is 354221543129. The reversal of 354221543115 is 511345122453.

354221543115 is a `hidden beast` number, since 3 + 5 + 4 + 2 + 215 + 431 + 1 + 5 = 666.

It is not a de Polignac number, because 354221543115 - 2¹ = 354221543113 is a prime.

It is a super-3 number, since 3×354221543115³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 354221543115.

It is not an unprimeable number, because it can be changed into a prime (354221543113) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5737531 + ... + 5798939.

It is an arithmetic number, because the mean of its divisors is an integer number (7165810080).

Almost surely, 2^354221543115 is an apocalyptic number.

354221543115 is a deficient number, since it is larger than the sum of its proper divisors (333696224565).

354221543115 is a wasteful number, since it uses less digits than its factorization.

354221543115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61745 (or 61742 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

Adding to 354221543115 its reverse (511345122453), we get a palindrome (865566665568).

The spelling of 354221543115 in words is "three hundred fifty-four billion, two hundred twenty-one million, five hundred forty-three thousand, one hundred fifteen".